Space heater



FIG. 1 is a perspective view of a space heater, showing my new design;

FIG. 2 is a left side elevation thereof;

FIG. 3 is a rear elevation thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front elevation thereof; and,

FIG. 7 is a right side elevation thereof.

The conventional electrical cord is shown fragmentarily in FIGS. 2-5 for ease of illustration. 

The ornamental design for a space heater, as shown and described. 